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LMH1219: lmh1219 reference design

jianguo li
Prodigy 50 points
Part Number: LMH1219
Other Parts Discussed in Thread: LMH1218

Hi team,

This is the reference design schematic of lmh1219. I would like to know can this chip work without software configuration.

Because I just want to use this chip to convert single-ended to differential, do not want to use it for equalization and clock recovery.

Can I only connect the OUT_CTRL to H, and not configurate the chip?

Best Regards,
Jianguo

  • 0
    TI__Mastermind 29655 points
    Hi Jianguo,

    Yes, this chip can work without software configuration. You will need to set the correct pin settings in order for the device to operate as expected.

    Yes, you leave OUT_CTRL = H to bypass the cable EQ and reclocker. For IN_OUT_SEL, if you are only using OUT0, you can leave IN_OUT_SEL floating.

    What is your application for the LMH1219? Do you have a block diagram of your intended use case?

    Michael
  • 0 in reply to Michael Lu (Santa Clara)
    Prodigy 50 points

    Hi Michael,

    Thank you for your help.

    I understand it.

    My application block diagram is as followed.

     I only want to use lmh1219 to convert single-ended to differential, and lmh1218 to convert differential to single-ended. Then I can process the SDI data in Altera A10 FPGA.

    Best Regards,
    Jianguo